126400051329 has 16 divisors (see below), whose sum is σ = 181372498560. Its totient is φ = 78009672960.

The previous prime is 126400051319. The next prime is 126400051331. The reversal of 126400051329 is 923150004621.

It is not a de Polignac number, because 126400051329 - 2⁴ = 126400051313 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 126400051329.

It is not an unprimeable number, because it can be changed into a prime (126400051319) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20311909 + ... + 20318130.

It is an arithmetic number, because the mean of its divisors is an integer number (11335781160).

Almost surely, 2^126400051329 is an apocalyptic number.

It is an amenable number.

126400051329 is a deficient number, since it is larger than the sum of its proper divisors (54972447231).

126400051329 is a wasteful number, since it uses less digits than its factorization.

126400051329 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40630120.

The product of its (nonzero) digits is 12960, while the sum is 33.

The spelling of 126400051329 in words is "one hundred twenty-six billion, four hundred million, fifty-one thousand, three hundred twenty-nine".